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Coating methods and apparatus using pre-formed ceramic mask

a technology of ceramic masks and masks, applied in the field of protective coatings, can solve the problems of masks being destroyed and the mask being removed, and achieve the effect of reducing the risk of sharding and reducing the effect of sharding

Active Publication Date: 2009-11-19
RAYTHEON TECH CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The patent describes a method for coating a part by applying a ceramic mask to one surface and then coating the other surface with a coating that partially contacts the mask. The mask is then removed. This method can be used to replace or restore a worn or damaged coating. The technical effect of this patent is to provide a reliable and effective method for coating parts with a variety of materials.

Problems solved by technology

The mask is destructively removed.
The mask removal may include shattering.

Method used

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  • Coating methods and apparatus using pre-formed ceramic mask
  • Coating methods and apparatus using pre-formed ceramic mask

Examples

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Embodiment Construction

[0013]FIG. 1 shows a part 20 including a coated substrate 22. An exemplary substrate may be of a nickel-, cobalt-, and / or iron-based superalloy. The exemplary part 20 may be an aerospace component. Exemplary components may be of gas turbine engines (e.g., blades, vanes, seals, structural components, shafts, disks, and the like). The exemplary part 20 is shown as having a compartment 24, one portion of which is to be coated (e.g., using conventional or other HVOF apparatus) and another portion of which is to remain uncoated. Nevertheless, the present teachings may be applicable to other coated and uncoated portions of other parts and to other basic coating apparatus / methods.

[0014]The exemplary compartment 24 may extend along a central axis 500 inward from an exterior surface 26 of the substrate. The exemplary compartment 24 may be a blind counterbored compartment having an inboard bore 28 having a base 30. An outboard counterbore 32 may extend to the surface 26. The counterbore 32 ma...

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Abstract

A method for coating a part includes applying a ceramic mask to a first surface portion of the part. A coating is applied to a second surface portion of the part and at least partially contacting the mask. The mask is destructively removed.

Description

CROSS-REFERENCE TO RELATED APPLICATION[0001]This is a continuation application of Ser. No. 11 / 267,965, filed Nov. 7, 2005, and entitled COATING METHODS AND APPARATUS USING PRE-FORMED CERAMIC MASK, the disclosure of which is incorporated by reference herein in its entirety as if set forth at length.BACKGROUND OF THE INVENTION[0002]The invention relates to protective coatings. More particularly, the invention relates to the application of protective coatings to metallic substrates.[0003]In the aerospace industry, it is known to apply protective coatings to metallic substrates. Exemplary coatings may be configured to provide one or more of wear protection, thermal protection, and chemical protection. Exemplary substrate materials are nickel-, cobalt-, and / or iron-based superalloys. Coating materials may vary by application. Exemplary wear coatings include carbide-based coatings and MCrAlY coatings. Such coatings may be applied as single layers or in multiple layers. MCrAlY coatings are...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): B32B3/10B05D1/32
CPCC23C4/02C23C4/06C23C4/08Y10T428/24917C23C4/124Y02T50/67C23C4/122C23C4/129C23C4/126C23C4/01C23C4/073Y02T50/60
Inventor BLANKENSHIP, DONN R.ZAJCHOWSKI, PAUL H.
Owner RAYTHEON TECH CORP